Robin Jacques (1920-1995), was an other great name in the 20th century British illustration. Self-taught - he illustrated classics such as Gulliver's Travels, Don Quixote, Arabian Nights, Hans Christian Andersen's Fairy Tales and many many others. Here's a link to his obituary in The Independent: http://www.independent.co.uk/news/people/obituary-robin-jacques-1612378.html
You have to look closely at these pictures to appreciate the excellent draughtsmanship and the enormous amount of work and care that went into them (Damien Hirst eat your heart out). The faces of the characters are so real you think you might have met them in the past, yet the lines in the drawings are so delicate and sensitive creating space and movement. You can even detect humor in their expressions and postures. Apparently Robin Jacques learned to draw by copying figures from books on human anatomy for years while later he began using life models so Art Colleges are not always the only way to get into Art.